7281073152 has 264 divisors, whose sum is σ = 22576772400. Its totient is φ = 2341011456.

The previous prime is 7281073127. The next prime is 7281073183. The reversal of 7281073152 is 2513701827.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7215624 + ... + 7216632.

Almost surely, 2^7281073152 is an apocalyptic number.

7281073152 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7281073152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11288386200).

7281073152 is an abundant number, since it is smaller than the sum of its proper divisors (15295699248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7281073152 is a wasteful number, since it uses less digits than its factorization.

7281073152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 7281073152 is about 85329.2045667836. The cubic root of 7281073152 is about 1938.1994446274.

Adding to 7281073152 its reverse (2513701827), we get a palindrome (9794774979).

The spelling of 7281073152 in words is "seven billion, two hundred eighty-one million, seventy-three thousand, one hundred fifty-two".